Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0268596 (EMA)
 2,520 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Cystic mesothelioma of perinephric retroperitoneum origin are very uncommon tumors and considered potentially malignant. We report one such case and discuss the clinical and pathological findings. A 70-year-old man was seen with complaint of discomfort in the right flank and hospitalized in May 1989. Computerized tomography revealed multiple cystic masses in the right retroperitoneal space which appeared to be infiltrating the kidney and the iliopsoas muscles. Magnetic resonance imaging showed deformation of the right kidney with many impressions in the parenchyma. The cystic lesions and the right kidney were extirpated on June 2, 1989. Grossly the specimen was 16 x 10 x 8 cm in size and 630 g in weight. The multiple cysts surrounding the kidney were each approximately 10 mm in diameter and had thin outer walls. The cyst fluid was clear and serous. The kidney had not been infiltrated but had only external impressions caused by the cystic lesions. Microscopically, the cysts were lined by a single layer of cuboidal cells accompanied by some hobnail-shaped cells, and no evidence of malignancy was found. The epithelium was focally positive for periodate acid Schiff and slightly positive for Alcian blue. It was strongly positive for cytokeratin and vimentin, and slightly positive for EMA but negative for lectins. The diagnosis was diffused benign multicystic mesothelioma. However, CT taken four months after the operation revealed local recurrence and radiotherapy (40 Gy) was instituted. Since the cystic mass tended to grow in size thereafter, the lesion appeared to be malignant clinically. We consider this is the first case of cystic mesothelioma of perinephric retroperitoneum origin reported in Japan.
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PMID:[A case of mesothelioma of perinephric space origin]. 177 3

Peritoneal cystic mesothelioma is very rare clinical entity, and only a few cases situated on the greater omentum are described. The authors here presented two cases of the greater omentum cystic mesothelioma that were diagnosed in 260,000 adult patients hospitalized for the first time, during the fifteen year period. Cystic tumor of 30 cm in diameter was found in a 78 years old male patient, and the second one was 35 cm in diameter in female patient 56 years old. Symptomatology was not characteristic. Peritoneal pseudocyst or parasitic, lymphogen, urogenital, enteric or dermoid cyst origin was preoperatively excluded, and correct diagnosis was established upon the operative findings and immuno-histochemical investigations. In both cases keratin and vimentin were clearly positive in tumor cells, but other markers were negative (EMA, Actin, S-100, NSE, chromogranin and sinoptophysin). Cystic mesothelioma was not infiltrative and surgical treatment was simple and successful.
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PMID:[Cystic mesothelioma of the greater omentum]. 1171 25